Sun Valley Tax

Sun Valley Tax makes professional tax preparation software for tax businesses that handle a high volume of returns. Its packages cover individual 1040 and corporate forms, offer free e-file in all 50 states, and include bilingual English and Spanish support, cloud-based or desktop options, and backup and recovery services. The company also offers a service bureau arrangement in which a tax business sells the software under its own brand.

Support is available 24 hours a day, seven days a week, and software packages can be paid in installments, with a 50 percent down payment and the balance due after the first tax season payout. The office is in Glendale, Arizona, and the phone line is open Monday through Friday, 9 a.m. to 5 p.m.